Apparatus for the pneumatic transport of grain and other granular or like materials



OF GRAIN AND May 6 1924.

C. BENTHAM APPARATUS FOR THE PNEUMATIC TRANSPORT OTHER GRANULAR ORLIKE MATERIALS Filed Aug 27 1921 Patented May 6, 1 924.

e 1,493,186 UNITED STATES PATENT. OFFI -i,

v CECIL IBENTHAM, or MANCHESTER, ENGLAND, ASSIGNOB' To HENRY SIMON LIMITED,

or MANCHESTER, ENGLAND.

APPARATUS roa THE PNEUMATIC TRANSPORT; oFsRAIN AND OTHER GRANULAR OR LIKE MATERIALS. 1

Application filed. August 27, 1921. Serial No. 495,906.

To all whom it may concern.

Be it known that I, CECIL BENTHAM, a subject of the King of Great Britain and Ireland, and a residentof Manchester, in

the county of Lancaster, England, have invented certain new and useful Improvements in or Connected with Apparatus for the Pneumatic Transport. of Grain and other Granular or Like Materials,oof which 1 the following is a specification. I

' This invention has reference to apparatus for the pneumatic transport ofgrain and other granular orlike materials, the appaseparated from the air, and the separated dust passes out through an outlet at the base of the cyclone, while the air passes out at the top to atmosphere or to the suction pump or the like.

In known apparatus of thesaid kind, the cyclone separator is arranged concentrically within the receiver, and the base thereof communicates with the dust outlet by means of an inclined pipe or spout. The object of the invention is to provide an improved arrangement of cyclone separator whereby a larger cyclone separator can be employed'in a receiver of given size, without interfering with the efficiency ofthe latter, and a more direct delivery of the dust is obtained from the cyclone separator. 40

' separator, instead of being arranged concentrically, in the receiver as hitherto, is arranged at an inclination to the axis of the receiver, with its base towards one side 45 thereof away from the inlet for the grain or other material and air.

In the accompanying drawings Fig. 1 is a central vertical section, and Fig. 2 is a sectional plan of one arrangement of vacuum-chamber receiver and cyclone separator in accordance with the invention.

Referring to the drawings, the cyclone separator 1 is disposed in the receiver 2 at such an inclination to the axis of the latter,

According to this invention, the cyclone that the tangential cowl or inlet 3 toits cy lindrical upper part 4 is close to the wall of the receiver 2 at one side thereof, and its conical base 5'is close to the wallofthereceiver 2 at the opposite side. Preferably, the inclination of the cyclone separator 1 its upperend on the axis of as shown in Fig. 1.

The receiver 2 is provided, as hitherto, with. a conicalor hoppered; bottom 6 with an aperture in the wallet which, the base 5 of the cyclone separator communicates di rectly, or by means'of a junction or throat piece'7. The aperture inthe wall of the bottom f the receiver 2 is provided on the outside with a .fitting 8 for the connection of; a pipe,spout or the like for leading the the receiver 2 dust from the cyclone separator 1.to any required place. The fitting8 may be provided with an inspection ho1e9 fitted with a removable cover.

The inlet 10 .for the entrance of the grain orother material to the receiver 2opens tangentially .to .the latter, and is situated more or less vertically below the tangential cowlv or inlet?) to the upper part 4 of the cyclone e0 is such that its axis intersects the plane of separator 1 and opposite to the. base' of the latter. The bottom of the receiver 2 is provided with a central discharge aperture-11, for the dischargeof the grain or other material and th heavier dust in the known way.

The tangential cowl or inlet 3 to the upper part 4 of the cyclone separator 1 is provided with a regulating valve which may conveniently be in the form of a flap 12 se-' cured to a rotatable spindle 13 mounted in a bearing 14 on the interior wall of the upper part of the cyclone separator and a bearing 15 on the top cover 16 of the receiver 2.

The upper .end of the valve spindle 13 may be provided with a hand wheel 17 or other suitable means for adjustment, and a handled locking nut 18 for screwing up against the bearing 15 to clamp it in the required adjusted position.

In use a partial vacuum is created in theseparator through suction in the conduit passing from the upper end of the separator through the upper wall 16 of the receiver 2. The inlet 10 extends into the body of grain or granular material which is to be transported, and the partial vacuum which is created in the inlet 10 and the receiver.

through the latters communication with the interior of the separator causes movement of the grain or granular material through the inlet 10 into the chamber of the receiver. The grainor material entering the receiver is deflected by the inner walls of the receiver in a circular direction and owing to the slower movement of the air in the receiving chamber the velocity of the particles entering through the conduit 10 is partially decreased, with the result that the grain or heavier particles of dust will fall into the hoppered bottom and be discharged through the aperature 11 therein at suitable intervals. The lighter particles of dust still held with the incoming air will rise in the receiver while passing circumferentially around the interior thereof, and will enter the separator through the inlet 3. The dust and air will circulate through the separator during which circulation the dust will be separated fromthe air and fall into the conical bottom, from which it will be'discharged directly through the outlet spout 8'. The air separated. from the dust will pass out wardly through the conduit extending from the upper end of the separator through the upper wall of the receiver. .The inspection window 9 enables one to observe the. functioning of the separator. The valve in the inlet 3 of the separator provides a control of the suction transmitted to the chamber of the receiver.

What I claim as my invention and desire to secure by Letters'Patent is: 4

1. In apparatus for the pneumatic transport of grain and other granular or like materials, a vacuum-chamber receiver of the kind referred to a cyclone separator contained in said receiver and arranged at an inclination to the axis of the receiver with its base towards one side of the receiver and away from the inlet to the receiver for the grain or other material and air. I

2. A vacuum-chamber receiver according to claim 1 wherein the base of the inclined cyclone separator opens through an aperture in the wall of the bottom of the receiver.

3. A vacuum chamber receiver comprising a casing into which grain or other granular v and like materials are received, a cyclone. separator arranged in said casing, the axis thereof being inclined with relation to the axis of the receiver, said separator being connected to discharge through an aperture in the bottom wall of the casing, a spout pipe on the outside of the casing forming a continuation of the separator, said spout pipe having an inspection window therein.

4. A vacuum-chamber receiver according to claim 1, wherein the inlet to the. cyclone separator is provided with a valve operatable from the outside of the receiver.

5. In apparatus for the pneumatic transport of grain and other granular or like materials, a vacuum-chamber casing with an aperture in its bottom wall, a cyclone separator contained within and communicating with said'casing with its axis inclined to the axis of the casing, said separator having a conical bottom discharging directly through I the aperture in the bottom wall of the casing, a material inlet leading to the casing, and an air discharge from the separator.

6. In apparatus for the pneumatic transport of grain and other granular or like materials, a vacuum-chambercasing with an aperture in its bottom wall, a cyclone separator contained within the casing with its axis inclined to theaxis' of the casing,-said separator adjacent its upper end communieating with the casing and having a conical bottom discharging directly through the aperture in the bottom wall of the casing.

7. In apparatus for the pneumatic transport. of grain and other granular or like materials, a vacuum-chamber casing, a cyclone separator contained within the casing, the axis thereof being inclined with relation to the axis of the receiver, the separator communicating with the interior of the casing adjacent its upper end and discharging at its lower end directly through a'wall of the casing. I

8. The apparatus as set forth in claim 7, and a valve operable from the exterior of the casing and controlling the communication between the separator and the interior of the casing.

9. The apparatus as set forth in claim 7 and a discharge conduit exteriorly of thecasing through which the separator discharges, said conduit having therein an inspection wlndow.

In witness whereof I have hereunto set my hand.

i CECIL BENTHAM. 

